Grate.



L. HOEN.

GRATE.

APPLICATION FILED 00122. 1915.

Patented June 20, 1916.

2 SHEETS-SHEET I.

HE COLUMBIA PLANouRAPH co., WASHINGTON, D. C-

L. HOEN.

GRATE.

APPLICATION FILED 0cT.22, 1915.

Patented J 11116 20, 1916.

2 SHEETSSHEET 2.

l0 boerz.

LOUIS HOEN, 0F UTICA, NEW YORK.

GRATE.

Mama.

Specification of Letters Patent.

Patented June 26, 1916.

Application filed October 22, 1915. Serial No. 57,375.

To all whom it may concern:

Be it known that T, LOUIS HoEN, a citizen of the United States, residing at Utica, in the county of Oneida and State of New York, have invented certain new and useful Improvements in Grates, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to a grate, and T declare the following to be a full, clear, concise and exact description thereof sufficient to enable any one skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings in which like reference characters refer to like parts throughout the specification.

The object of the invention is to provide a. simple eflicient grate for use in furnaces, whereby the clinkers and ashes will be effectively separated from the coals in the fire pit and dumped into the ash pit of the furnace with but very little effort on the .part of the operator or user. The grate is also designed to provide a substantial bed for the coals or fuel and yet increase the interstices, particularly in the region of the periphery of the grate, whereby to provide for a greater amount of air space with the resultant advantage in the consumption of the fuel. Furthermore, the parts of the grate are few in number and can be easily assembled, so that worn or broken parts can be readily replaced by new ones.

These objects will appear by referring to the drawings in which:

Figure 1 is a plan view of the grate; Fig. 2 is a central verticcl section taken onthe line 22 of Fig. 1; Fig. 3 is a transverse vertical section taken on the line 3-3 of Fig. 1; Fig. 4: is a detail fragmentary view showing a vertical section on the line 4- of Fig. 1; Fig. 5 is a detail fragmentary view showing a vertical section taken on the line 5-5 of Fig. 1; Fig. 6 is a detail fragmentary view, showing a vertical section on the line 6-6 of Fig. 2.

Referring more particularly to the drawings, the grate embodies a frame -1-,

which comprises an annular ring 2, having the peripheral teeth 3 and the center bar 4:.

The annular ring 2 and the peripheral teeth 3 are each provided with the pyramidal teeth 5 adapted to aid in loosening the clinkers and ashes when the grate is in motion. The center bar 4 has disposed at its middle portion, a depending gudgeon 6 resting in the loose bearing 7 formed in the bracket portion 8 of the bilateral arm 9 of the yoke 10. The rear ends of the arm 9 are formed integral with the rear hanger bar 12 having the trunnions 13 and 14 adapted to be mounted in corresponding bearings, not shown, in the furnace. The yoke 10 has formed also integral therewith, the two parallel disposed bars 15--15 developing at their forward ends into the lateral branching arms 16-16, whose extremities detachably engage certain well known hanger bars employed in nearly all furnaces, whereby to hold the grate in elevated position within the fire pot. The rear hanger bar 12 is furnished with two integral upstanding posts 1717 having recesses with open bearings 18*18 for mounting the trunnions of the rollers 19-19 which support in an antifriction manner the annular ring 2 of the frame -1- at different locations. The forward part of the frame 1- is provided with an extension 20 having on its under surface a rack or strap gear 21 adapted to mesh with the spur gear 22 mounted with a key 60 to revolve with the shaker shaft 23. The gear 22 is held in given longitudinal position upon the shaker shaft 23 by reason of its tapering aperture or hub through which projects the corresponding portion 2 1 of the shaft 23 and by the horseshoe or U shaped gear shield 25 disposed between the spur gear 22 and the collar 26 integral with the shaker shaft 23. The free ends of the U shaped gear shield 25 are provided with the caps or lugs 272( having suitable apertures for the disposition of the cotter pin 28. The collar 26 is cutaway on a straight line at 29 to make way for the adjacent surface of the cotter pin 28, when assembled, whereby to give the said cotter pin 28 a better purchase for 46 and 47 ,3 which have formed therein the compelling the U shaped gear shield 25 to revolve with the shaft 23. V

The outer endof the shaft 23 is angled as at for the detachable connection .of a crank handle, whereby to turn the shaft 23; The opposite or inner end of the shaft 23 has a rotary bearing at 31 in the bracket portion 80f the yoke'lO. The shaft 23 is prevented from shaft 23 and lie on either side of the bearing formed by the cross bar 33 connecting the parallel bars 15 of the yoke 10 and the cap bar 34 held to the cross bar 33 by the screws or bolts 3535. 7

The annular ring 2 is provided at suitable intervals'with apertures or bearings for the reception of the trunnions 36 and 45 of the right and left short-bars 37 and 38 respectively and the right and left long bars 39 and 40 respectively. The bars 37 38, 39 and 40 possess the laterally projecting teeth 41disposed at givenointervals therealong with the resultant interstices therebetween, whereby to form a kind of lattice work as a bed for holding the fuel while burning. The undersurface of the ends of the teeth 41 are rounded off,- whereby to aid hanger bar 12.

The actuation of in pushing the unburnt coals back andv to crush and push below the clinkers, when the adjacent teeth 41 are passing each other, as the bars 37, 38, 39 and 40 are revolved.

The forwardvjournals 45" of the bars 37,

'38, 39' and 40 are held in'their open bearings in the annular ring 2 by the cap plates counter parts to the open bearings in the annular ring 2. The cap plates 46 and 47 are fastened in. assembled position by the bolts or screws48.

A depending lever 50 is formed integral with each of the bars 37 38, 39 and 40. The lower end of these levers 50 rest in recesses of a T'shaped fulcrum bar 51 and are held thereinwith a limited amount of motion by the cotter pins 52. The rear end of the T-shaped fulcrum bar 51 is provided with an elongated recess 53, up through which projects a gudgeon or axle bar 54 integral with the peninsular portion 55' of the rear The grate may be operatedby engaging the end 30 of the shaker shaft 23 with any ordinary. crank handle and then turning the same,;firstinone direction and then the other, whereupon the spur gear 22 will be revolved: to thereby. cause its intermeshing rack 21 to be oscillated in a horizontal plane. the rackeffects a reciprocal rotary movement of the frame 1 and of its connected parts the bars 37, 38, 39 and 40. Simultaneously with the rotary movement of the frame 1-, the bars 37,

i 38, 39 and 40 willbe'rocked axially because moving logitudinally by 'the collars '3232 which are formed integral with the 7.37, as, 39 and for said gudgeon,

of their connection by means of the levers 50 with the fulcrum bar 51 that is adapted to move a short distance forward and upward slightly to conform to the revolving motion of the said bars about the depending gudgeon 6 as an axis.

It will, therefore, be apparent that the bars 37, 38, 39 and 40 are subjected simultaneously to a planetary or compound motion comprising that of a revolution on their own axes 36 and 45 respectively, and about the gudgeon 6 as an axis. This planetary motion is highly efiicient in rendering the grate effective for the purpose of dumping the ashes and grinding the clinkers from the surface thereof. Furthermore, the leverage provided by the long arms 50 secures a sufiicient amount of revolution of the bars 40 upon their own axes with a minimumamount of power for actuating the same. The pyramidal teeth 5 will aid materially in loosening the ashes and the rounded under surfaces of the teeth 41 will aid in pushing back the fuel and grinding the clinkers. Moreover, the peripheral teeth 3 of the annular ring 2 will cause the ashes and clinkers to be cleaned from the outside circumference of the grate as Well as from the contiguous surface of the fire pot of the furnace. And still further, the peripheral teeth 3 provide interstices or air spaces at the extreme circumference of the grate for the circulation of the air at that portion, whereby to cause a more equal distribution of the air over the under surface of the fuel with the resultant increase of 1consumption and consequent intensity of ieat.

Although I do not consider it necessary, a headed screw 62 and a washer 63 may be employed to retain the gudgeon 6 within its bearing.

Having thus described my invention, What I claim as new and desire to secure by Letters Patent is:

1. In a grate, a frame, a yoke supportingsaid frame, a rack formed in said frame, a gear in mesh with said rack, whereby to oscillate said frame, a gudgeon depending from said frame, a bracket having a bearing rotary bars mounted in said frame, levers depending from said bars, and a T shaped fulcrum bar engaging said levers, whereby to rock said bars when said frame is oscillated.

2. In a grate, a frame, a yoke supporting said frame, a rack formed in said frame, a

T shaped fulcrum bar engaging said levers, levers, whereby to rock said bars when said 10 whereby to rock said bars when said frame is frame is oscillated. oscillated. In testimony whereof I have affixed my 3. In a grate, a frame, a yoke supporting signature in the presence of two witnesses. said frame a rack formed in said frame a gear in mesh with said rack, whereby td LOUIS HOEN oscillate said frame, rotary bars mounted in Witnesses. said frame, levers depending from said bars, FRED CLEVELAND FosTER, and a T shaped fulcrum bar engaging said T. L. WILDER.

@opiee of thin patent may be obtained for five cente each, by Mill-easing the Gommiemioner o1 Patenta, Waam'toii, D. G." 

